The Chips and Technologies ct655xx range of chips are primarily
manufactured for use in laptop computers, where their power
conservation circuitry is of importance. They can however be found in
a few "Green
" video cards for desktop machines. Prior to
the release of XFree 3.2, XFree contained only limited support for
these chipsets. The support that was introduced in XFree3.1.1 was not
capable of linear addressing or using the programmable clocks in the
ct65535 and later chips. In addition to these chipsets the new driver
supports the WinGine ct643xx series of chips and gives limited support
to the WinGine ct642xx chips.
The driver has been almost completely rewritten, with many additional features added. These include
With the latest release of XFree, the Chips and Technologies driver supports the new XAA acceleration interface. This should improve the graphics performance particularly at higher depths or for the newer chips.